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A 58-year-old woman with adenocarcinoma in the middle lobe of right lung. The spectral CT imaging (section thickness, 0.625 mm) water-based material decomposition images (a-c) and iodine-based material decomposition images (d-f) at PP, AP, and VP. The region of interest (ROI) was drawn in the proximal and distal area of the lesion. dNIC (PP) =0.06, dNIC (AP) = 0.05, and dNIC (VP) = 0.13.
